RPi Intake Scoops and Exhaust
#31
Or something like this: (it replaces the pipes from the cat-back to the end of the Y pipe)
#32
I understand the concept of the scope but, They would only be helpful once speeds increase and air pressure increases. They would have zero effect off the line and on a dyno where the car is not even moving I can't imagine they would increase anything. Airflow being crammed into the intake as with a supercharger of turbo works because air is forced into the engine, which would not happy with these on a dyno, could not increase horsepower.
Am I missing something? There are bolt on scope but the intake is stock, right?
Am I missing something? There are bolt on scope but the intake is stock, right?
#33
I understand the concept of the scope but, They would only be helpful once speeds increase and air pressure increases. They would have zero effect off the line and on a dyno where the car is not even moving I can't imagine they would increase anything. Airflow being crammed into the intake as with a supercharger of turbo works because air is forced into the engine, which would not happy with these on a dyno, could not increase horsepower.
Am I missing something? There are bolt on scope but the intake is stock, right?
Am I missing something? There are bolt on scope but the intake is stock, right?
they have fans that they turn up to 60 mph and test then intake scoops.
#34
I understand the concept of the scope but, They would only be helpful once speeds increase and air pressure increases. They would have zero effect off the line and on a dyno where the car is not even moving I can't imagine they would increase anything. Airflow being crammed into the intake as with a supercharger of turbo works because air is forced into the engine, which would not happy with these on a dyno, could not increase horsepower.
Am I missing something? There are bolt on scope but the intake is stock, right?
Am I missing something? There are bolt on scope but the intake is stock, right?
The company itself was great to deal with.
I dealt directly with Eloy, he seemed like a great guy.
The problem with fans for dyno testing is they don't simulate the real world.
Ram air is variable dependent on speed, where the fans are not.
This skews the dyno results to be more favorable at the bottom end.
This is JMO, based on my personal experience & other Z4 owners......
As far as the product goes, I just don't believe in it after my experience with my Z4M.
I felt absolutely no gains on the street & as I said I removed it after a couple of weeks.
Several of the guys on the Z4 forums tested these at the strip & got ZERO time improvements.
The other thing that many were disappointed in was the fit & finish quality.
All it is, is a piece of sheet metal pop riveted together.
It looked like a DIY project.
...YMMV, good luck
#35
Alright since this thread is being pushed along, I'll elaborate on my earlier post.
The company itself was great to deal with.
I dealt directly with Eloy, he seemed like a great guy.
The problem with fans for dyno testing is they don't simulate the real world.
Ram air is variable dependent on speed, where the fans are not.
This skews the dyno results to be more favorable at the bottom end.
This is JMO, based on my personal experience & other Z4 owners......
As far as the product goes, I just don't believe in it after my experience with my Z4M.
I felt absolutely no gains on the street & as I said I removed it after a couple of weeks.
Several of the guys on the Z4 forums tested these at the strip & got ZERO time improvements.
The other thing that many were disappointed in was the fit & finish quality.
All it is, is a piece of sheet metal pop riveted together.
It looked like a DIY project.
...YMMV, good luck
The company itself was great to deal with.
I dealt directly with Eloy, he seemed like a great guy.
The problem with fans for dyno testing is they don't simulate the real world.
Ram air is variable dependent on speed, where the fans are not.
This skews the dyno results to be more favorable at the bottom end.
This is JMO, based on my personal experience & other Z4 owners......
As far as the product goes, I just don't believe in it after my experience with my Z4M.
I felt absolutely no gains on the street & as I said I removed it after a couple of weeks.
Several of the guys on the Z4 forums tested these at the strip & got ZERO time improvements.
The other thing that many were disappointed in was the fit & finish quality.
All it is, is a piece of sheet metal pop riveted together.
It looked like a DIY project.
...YMMV, good luck
I guess its different on different cars. we will just have to wait and see.
#37
Just got back from RPi.... They said that the Scoops are possible to make and that they would need me to come back and leave my car so they can try different approaches until they find what gives the best gain.... Once they are finished with testing it on my car, they would need 2 other cars to test the product on to see if the results are constant.
Requirements to be a test car:
-G35 HR 2007+
-Stock (No performance mods)
-Live in Socal area, or can get to RPi: 7029 Marcelle Street
Paramount, CA 90723
What you get out of it:
-Depending on the price of R&D, you will get the scoops for free or for a very low price. You also get dyno numbers for your car
Requirements to be a test car:
-G35 HR 2007+
-Stock (No performance mods)
-Live in Socal area, or can get to RPi: 7029 Marcelle Street
Paramount, CA 90723
What you get out of it:
-Depending on the price of R&D, you will get the scoops for free or for a very low price. You also get dyno numbers for your car
Last edited by G35 {skyline}; 03-18-2009 at 07:02 PM.
#40
The problem with fans for dyno testing is they don't simulate the real world.
Ram air is variable dependent on speed, where the fans are not.
This skews the dyno results to be more favorable at the bottom end.
Several of the guys on the Z4 forums tested these at the strip & got ZERO time improvements.
Ram air is variable dependent on speed, where the fans are not.
This skews the dyno results to be more favorable at the bottom end.
Several of the guys on the Z4 forums tested these at the strip & got ZERO time improvements.
You could hook up a leaf blow to the car on a dyno and get a bigger effect.
#41
Registered User
iTrader: (9)
On the other hand, if all things are equal (closed hood, fan in the same place pointing the same direction, at the same speed, etc.) then it's at least a good way to see if there are gains to be had.
Not necessarily a good way to judge how much HP you're actually gaining over any given range, but good enough to see the difference between two set-ups--OEM and the aftermarket scoop. Since the OEM intake works on the ram effect and gets air from the same general vicinity as these scoops, then it should be a rather fair comparison, i think.
Not necessarily a good way to judge how much HP you're actually gaining over any given range, but good enough to see the difference between two set-ups--OEM and the aftermarket scoop. Since the OEM intake works on the ram effect and gets air from the same general vicinity as these scoops, then it should be a rather fair comparison, i think.
#42
I think that the proper question here is "are these scoops worth the $120"
even thought 120 isn't much for most G drivers, I wouldn't pay it if it looks like recycled aluminum coke cans, and offered no real world gains.....BUT if it is a good quality product with even a 2whp increase, then bring it on.
even thought 120 isn't much for most G drivers, I wouldn't pay it if it looks like recycled aluminum coke cans, and offered no real world gains.....BUT if it is a good quality product with even a 2whp increase, then bring it on.
#43
The stock intake systems are hard to beat. Induction type systems have been out in the market for years and thats why most people buy them. Do they work? I havent seen one work in years. Dyno graphs posted to sell product are always questionable due to testing procedures (open hood with fan blowing at the filter), etc. A few years ago, I tried to do something different. I wanted to improve airflow to the stock system and thats where our ram induction comes in. Justin has offered his car to us for testing so that will be nice. We will still need a few more cars to test though. This will help insure that gains are true and they are not by accident. Those who are local and want to volunteer can call us at 562-630-5966.
#44
Alright since this thread is being pushed along, I'll elaborate on my earlier post.
The company itself was great to deal with.
I dealt directly with Eloy, he seemed like a great guy.
The problem with fans for dyno testing is they don't simulate the real world.
Ram air is variable dependent on speed, where the fans are not.
This skews the dyno results to be more favorable at the bottom end.
This is JMO, based on my personal experience & other Z4 owners......
As far as the product goes, I just don't believe in it after my experience with my Z4M.
I felt absolutely no gains on the street & as I said I removed it after a couple of weeks.
Several of the guys on the Z4 forums tested these at the strip & got ZERO time improvements.
The other thing that many were disappointed in was the fit & finish quality.
All it is, is a piece of sheet metal pop riveted together.
It looked like a DIY project.
...YMMV, good luck
The company itself was great to deal with.
I dealt directly with Eloy, he seemed like a great guy.
The problem with fans for dyno testing is they don't simulate the real world.
Ram air is variable dependent on speed, where the fans are not.
This skews the dyno results to be more favorable at the bottom end.
This is JMO, based on my personal experience & other Z4 owners......
As far as the product goes, I just don't believe in it after my experience with my Z4M.
I felt absolutely no gains on the street & as I said I removed it after a couple of weeks.
Several of the guys on the Z4 forums tested these at the strip & got ZERO time improvements.
The other thing that many were disappointed in was the fit & finish quality.
All it is, is a piece of sheet metal pop riveted together.
It looked like a DIY project.
...YMMV, good luck
hours of dyno testing and datalogging go into the development process. Our ram induction has been test in France, Germany, Egypt, etc and they all see the same results as us. I would be happy to send you an updated Z4 scoop if you still have the car. And, I will personally walk you through the install over the phone. They also tested in Europe that our ram air scoop for the Z4 improved highway mpg by 1. Its not a whole lot but every little bit counts right?
I think that the proper question here is "are these scoops worth the $120"
even thought 120 isn't much for most G drivers, I wouldn't pay it if it looks like recycled aluminum coke cans, and offered no real world gains.....BUT if it is a good quality product with even a 2whp increase, then bring it on.
even thought 120 isn't much for most G drivers, I wouldn't pay it if it looks like recycled aluminum coke cans, and offered no real world gains.....BUT if it is a good quality product with even a 2whp increase, then bring it on.